Sound Energy- 4th grade

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Transcript of Sound Energy- 4th grade

Sound Vocab- 4th grade PitchPitch is the highness or lowness of sound. Volume Volume is the loudness or softness of sound. Sound WavesSound waves are areas of bunched up and spread out air particles that move in all directions from a vibrating object. Wavelength (noun) A wavelength is the distance from the top of one wave to the top of the next. ConclusionWith your partner, list three objects that create sound. Also, label if they could create a high pitch, low pitch, or BOTH. The distance from crest to crest is called the wavelength. The wavelength may be either long or short. NOT a wavelength:

A wavelength is not somethingwe can see! Sound waves can NOT travel in outer space. Sound waves do not travel in a straight line. Pitch is NOT how loud something is. The fire alarm has a high pitch. Our PE teacher's voice has a low pitch. A baby's cry is a high pitch.A lion's roar has a low pitch. When you whisper, you have a soft volume. When speaking in the gym, people have a louder volume. When your little brother says, "Turn up the volume," he wants the TV louder. Volume is NOT the highness or lowness of sound .Vibrationmoving back and forth quickly to produce sound. Sound starts with a vibration. Your phone's vibration makes sound if it's on the table. You can not SEE vibration. Frequency How often something vibrates per second. The higher the pitch of an object, the higher the frequency. The lower the pitch, the lower the frequency. Amplitudethe energy in a sound wave. From memory, draw a sound wave on your paper, and see if your partner can label the amplitude, crest, and trough.